JP2594333Y2 - Elastic track plate for endless track belt - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an elastic track plate for an endless track belt for protecting a running road surface used for construction vehicles such as bulldozers and power shovels, and relates to a convex flat surface on the back surface of an elastic shoe material. It is an object of the present invention to reduce or eliminate the number of flat metal protective plates to be superimposed on the elastic member, to reduce the weight of the elastic crawler plate, reduce the number of processing steps, and reduce costs.

[0002]

2. Description of the Related Art Tracks for endless track belts usually have
An iron-made footwear having one or more lugs protruding along its length direction is connected to each other endlessly through a number of links via bushes and pins. In order to significantly damage the road surface when traveling on the road, an elastic protective shoe plate is superposed and integrated on the shoe surface of each shoe plate to travel.

[0003]

However, the above-mentioned elastic protective shoe plate is provided with an iron protective shoe on the back surface, particularly on the entire convex portion, which has an uneven shape corresponding to the uneven surface of the iron shoe plate shoe surface of the endless track belt. Since the plates are polymerized and integrated, not only does the weight increase, but also an increase in the number of processing steps in manufacturing and an increase in the iron material used are inevitable. In particular, when the above-mentioned iron protection shoe plate is pressed into an uneven shape corresponding to the unevenness of the iron shoe shoe surface, the workability of the elastic shoe plate is bad and the cost is extremely high, and the protection of iron Due to the presence of the entire surface of the shoe shoe elastic back surface, it is easy to produce a delicate gap between the shoe shoe surface when installing it,
For this reason, there are problems such as a failure in attaching the elastic protective shoe plate and a backlash, resulting in poor durability.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems in the prior art, and eliminates the need for pressing the uneven surface corresponding to the mounting surface of the iron footwear plate, and reduces the mounting of the iron protective shoe plate. Or, by reducing the cost and weight by removing it, and to improve the durability of the elastic crawler belt by improving the attachment to the footwear board, specifically, the endless track belt on the back In the elastic shoe material having an uneven shape corresponding to the unevenness of the iron shoe shoe surface, at least one of the convex portions having the uneven shape of the elastic shoe material has a substantially U-shape along its length direction. Characterized by burying a mounting bolt in the shape of a circle, and projecting both ends of the mounting bolt outward from the surface (in the mounting direction with respect to the iron shoe). About.

In the present invention, a flat metal protective plate is provided on the convex portion having a concave-convex shape formed on the back surface of the elastic shoe material and not having the substantially U-shaped mounting bolt embedded therein. The present invention also relates to an elastic track plate for an endless track belt in which a base of a mounting bolt is integrally attached to the flat metal protective plate while being attached.

Further, according to the present invention, the elastic shoe material attached to the metal protective plate has a hollow portion extending in the length direction formed therein. It also relates to elastic footwear for track belts.

[0007]

[Function] A substantially U-shaped mounting bolt buried along the length of the elastic shoe material in the convex portion of the elastic shoe material is provided to sufficiently reinforce the elastic shoe material. Does not require mounting. Also, compared to the case where the metal protective plate is pressed into an uneven shape corresponding to the unevenness of the iron shoe shoe surface, there is no flat metal protective plate, or its Since it is attached only to a part, when it is attached to the crawler shoe surface of the endless track belt, a certain amount of plastic deformation is possible in the concave portion of the elastic shoe material where there is no metal protection plate, No gap is caused between them, and there is no problem in mounting. In addition, the weight and material cost can be reduced by the amount corresponding to the portion where the metal protective plate does not exist.

In the case where a hollow portion is formed in the elastic shoe material in the longitudinal direction thereof, when the hollow portion is mounted on a tracked vehicle and travels, a local portion on the shoe surface of the elastic shoe material is formed. Such stress is uniformly distributed throughout the elastic shoe material by the hollow portion.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The specific contents of the present invention will be described below with reference to FIGS.
Explaining based on each embodiment shown in 3, reference numeral 1 indicates an elastic shoe material, and reference numeral 4 indicates a U-shaped bolt. The elastic shoe material 1 is made of rubber, urethane, or another elastic material, and has an uneven shape corresponding to the uneven shape of a ground-side shoe surface of an iron shoe board (not shown) formed on the back surface (upper surface in FIG. 1). A groove-shaped concave portion 2 corresponding to the protruding lug of the iron shoe plate is formed in the longitudinal direction, and convex portions having a flat surface on both left and right sides of the concave portion 2. 3 are formed.

Further, the elastic shoe material 1 has a hollow portion 1a. 1a is formed at a position avoiding the groove-shaped concave portion 2 so as to correspond to each protruding lug due to the unevenness of the ground-side shoe surface of the iron shoe plate. Dispersibility is ensured.
The U-shaped bolt 4 has both ends bent at right angles and in the same direction, and a helical male screw portion 4a is provided at the tip of the U-shaped bolt 4. The male screw portions 4a at both ends of the U-shaped bolt are buried in a state of protruding outward from the surface (in the direction of attachment to the iron footboard) along the vertical direction.

Further, in the drawing, reference numeral 5 denotes a flat metal protective plate, which is provided on the surface of the convex portion 3 of the elastic shoe material 1 on the side where the U-shaped bolt 4 is not buried. With the concave portion 2 as a center, the convex portion 3 formed on one side of the concave portion 2 is formed to have a size capable of substantially covering the flat surface. The head 6a is integrally attached to the back surface of the metal protection plate 5 by welding 6b so that the tip protrudes outward (in the direction of attachment to the iron footwear plate), and the metal protection plate 5 is attached. In this state, the metal protective plate 5 is configured to be integrated with the elastic shoe material 1 by means of vulcanization bonding or the like so that close contact polymerization can be performed on the ground-side shoe surface of the iron shoe plate. I have.

In this case, the mounting bolt 6 is not welded to the metal protection plate 5 but a bolt hole is formed in the metal protection plate 5 in advance, and the head portion 6a of the mounting bolt 6 is connected to the metal protection plate 5. It may be buried integrally with the elastic shoe material 1 side, and the tip of the mounting bolt 6 may protrude outward (in the mounting direction with respect to the iron shoe plate) through a bolt hole formed in the metal protective plate 5. .

In the embodiment shown in FIG. 1, the U-shaped bolt 4 is buried only on one side of the protrusion 3 bordering the groove-shaped recess 2, but on both sides of the protrusion 3. It is more effective if both are applied. Also, as shown in FIG. 3, the U-shaped bolts 4.4 are buried in the projections 3.3, and only the portions near both ends of the projections 3 extending in the length direction of the elastic shoe material 1 are substantially centered. The male screw portions 4a at both ends of the U-shaped bolt are directed outward from the surface of the male screw portion 4a of the U-shaped bolt from the surface (in the mounting direction of the iron shoe plate). Alternatively, a metal protective plate 5.5.5.5 that is made to protrude may be applied.

Further, the shape of the hollow portion 1a does not necessarily have to be circular in cross section as in the above embodiment, and does not matter whether it is an elliptical shape or a rectangular shape. As for the length of the hollow portion 1a, it is more effective to make the length of the elastic shoe material 1 continuous as long as possible in the longitudinal direction.
Considering the existence of the bolt head hole for the bolt for mounting the iron footboard, which is provided at the center of the above, it is sufficiently effective to provide the bolt on the left and right sides thereof.

A male screw portion 4a of a U-shaped bolt 4 buried in the elastic shoe material 1 is attached to the elastic shoe plate having the above structure.
Alternatively, the male screw portion 4a of the U-shaped bolt 4 and the head portion 6a of the mounting bolt 6 of the metal protection plate 5 are provided with mounting holes (shown in the figure) formed in a metal track plate of an endless track vehicle such as a bulldozer. (Omitted), and a nut is screwed into the nut to tighten and fix it.

[0016]

As described above, the present invention is directed to an elastic shoe material having an uneven shape corresponding to the unevenness of the iron shoe plate shoe surface of the endless track belt on the back surface. A substantially U-shaped mounting bolt is embedded in at least one of the portions along its length direction, and both ends of the mounting bolt are protruded outward from the surface (in the mounting direction of the iron shoe plate). To be
A substantially U-shaped mounting bolt buried along the length of the elastic shoe material in the convex portion of the elastic shoe material satisfactorily reinforces the elastic shoe material and does not require a metal protective plate. .

[0017] Therefore, not only can the weight and material cost be reduced, but also all or only the convex surface of the back surface of the elastic shoe material, which has an uneven shape corresponding to the unevenness of the iron shoe shoe surface, is formed. In part, because it is designed to attach a flat metal protective plate with the tip of the mounting bolt protruding outward, while sufficiently maintaining the strength of the mounting part of the elastic shoe material, Moreover, when the elastic shoe material on the back surface of the elastic shoe material, or the concave portion, and the convex portion of the elastic shoe material on which the metal protective plate is not provided is exposed, as a result, when the elastic shoe material is attached to the crawler shoe surface of the endless track belt, The elastic shoe material at the intermediate portion is easily plastically deformed to some extent, and there is no possibility of causing a gap between the elastic shoe material and the shoe shoe surface, thereby resulting in a remarkable improvement in mountability.

In the case where a hollow portion is formed in the elastic shoe material in the length direction thereof, when the hollow portion is mounted on a tracked vehicle and travels, a local portion on the shoe surface of the elastic shoe material is formed. Such stresses are evenly distributed throughout the elastic shoe material by the hollow portions, and as a result damage is minimized, so that the durability of the elastic shoe plate is significantly improved.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a crawler belt elastic crawler board showing a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the endless track elastic shoe plate shown in FIG. 2;

FIG. 3 is an overall perspective view of a crawler belt elastic crawler plate showing a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Elastic shoe material 1a Hollow part 2 Concave part 3 Convex part 4 U-shaped bolt 4a Male screw part 5 Metal protection plate 6 Mounting bolt 6a Head 6b Welded part

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Tankatsu Niitsu 5-9, Yonbancho, Chiyoda-ku, Tokyo Topy Industries Co., Ltd. (56) References JP-A-6-115467 (JP, A) 15286 (JP, U) Japanese Utility Model 5-13888 (JP, U) Japanese Utility Model 5-82776 (JP, U) Japanese Utility Model Application 59-80175 (JP, U) Japanese Utility Model Utility Model 6-74594 (JP, U) Japanese Utility Model Application No. Sho 59-18673 (JP, U) Japanese Utility Model Application No. Sho 61-89439 (JP, U) Japanese Utility Model Application No. 43-9526 (JP, Y1) (58) Fields investigated (Int. Cl. ⁶ , DB name) B62D 55/28

Claims (3)

(57) [Scope of request for utility model registration] 1. An elastic shoe material having an uneven shape corresponding to the unevenness of an iron track shoe surface of an endless track belt on a back surface, wherein at least one of the convex portions of the elastic shoe material having the uneven shape has: A substantially U-shaped mounting bolt is embedded along the length of the mounting bolt, and both ends of the mounting bolt protrude outward from the surface (in the mounting direction with respect to the iron shoe). Elastic tracks for endless tracks. 2. A flat metal protective plate is attached to a surface of a convex portion having a concave and convex shape formed on the back surface of an elastic shoe material, on which a substantially U-shaped mounting bolt is not buried. 2. The endless track belt elastic crawler according to claim 1, wherein a base of a mounting bolt is integrally attached to the flat metal protection plate. 3. The endless track belt according to claim 1, wherein the elastic shoe material attached to the metal protection plate has a hollow portion extending in the length direction inside the elastic shoe material. Elastic footboard.